<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			
			*{
				padding: 0;
				margin: 0;
			}
			#out{
				width: 800px;
				height: 500px;
				border: 4px solid orange;
				margin: 10px auto;
			}
			#one{
				width: 300px;
				height: 500px;
				background: purple;
				float: left;
			}
			#two{
				width: 500px;
				height: 300px;
				background: dodgerblue;
				float: left;
			}
			#three{
				width: 500px;
				height: 200px;
				background: green;
				float: left;
			}
		</style>
	</head>
	<body>
		
		<div id="out">
			<div id="one"></div>
			<div id="two"></div>
			<div id="three"></div>
		</div>
		
		
		
	</body>
</html>
